diff --git a/Core/Inc/main.h b/Core/Inc/main.h
index fe11198..212be1b 100644
--- a/Core/Inc/main.h
+++ b/Core/Inc/main.h
@@ -178,10 +178,10 @@ void Error_Handler(void);
 #define A111_ENABLE_GPIO_Port 	GPIOB
 #endif
 #ifdef YUNHORN_STS_WLE5CCxx
-#define A111_SENSOR_INTERRUPT_Pin 			GPIO_PIN_5
+#define A111_SENSOR_INTERRUPT_Pin 			GPIO_PIN_3				// SWITCH TO PB-3, 2024-05-06
 #define A111_SENSOR_INTERRUPT_GPIO_Port 	GPIOB
-#define A111_SENSOR_INTERRUPT_EXTI_IRQn 	EXTI9_5_IRQn
-#define A111_ENABLE_Pin 		GPIO_PIN_3
+#define A111_SENSOR_INTERRUPT_EXTI_IRQn 	EXTI3_IRQn				// SWITCH TO PB-3, 2024-05-06
+#define A111_ENABLE_Pin 		GPIO_PIN_5							// SWITCH TO PB-5, 2024-05-06
 #define A111_ENABLE_GPIO_Port 	GPIOB
 #endif
 
diff --git a/Core/Src/stm32wlxx_it.c b/Core/Src/stm32wlxx_it.c
index 5e83781..9b75e47 100644
--- a/Core/Src/stm32wlxx_it.c
+++ b/Core/Src/stm32wlxx_it.c
@@ -260,6 +260,26 @@ void EXTI1_IRQHandler(void)
   /* USER CODE END EXTI1_IRQn 1 */
 }
 
+
+
+// SWITCH TO PB-3, 2024-05-06
+/**
+  * @brief This function handles EXTI Line 3 Interrupt.
+  */
+void EXTI3_IRQHandler(void)
+{
+  /* USER CODE BEGIN EXTI3_IRQn 0 */
+
+  /* USER CODE END EXTI3_IRQn 0 */
+	HAL_GPIO_EXTI_IRQHandler(A111_SENSOR_INTERRUPT_Pin);
+  /* USER CODE BEGIN EXTI3_IRQn 1 */
+
+  /* USER CODE END EXTI3_IRQn 1 */
+}
+
+
+
+
 /**
  * @brief This function handles DMA1 Channel 1 Interrupt.
  */
@@ -341,7 +361,7 @@ void EXTI9_5_IRQHandler(void)
   /* USER CODE END EXTI9_5_IRQn 0 */
   //HAL_GPIO_EXTI_IRQHandler(BUT3_Pin);
   /* USER CODE BEGIN EXTI9_5_IRQn 1 */
-  HAL_GPIO_EXTI_IRQHandler(A111_SENSOR_INTERRUPT_Pin);
+  //HAL_GPIO_EXTI_IRQHandler(A111_SENSOR_INTERRUPT_Pin);
   /* USER CODE END EXTI9_5_IRQn 1 */
 }
 
diff --git a/STM32CubeIDE/Release/STS_O7.bin b/STM32CubeIDE/Release/STS_O7.bin
index 5e0b9da..40e2f28 100644
Binary files a/STM32CubeIDE/Release/STS_O7.bin and b/STM32CubeIDE/Release/STS_O7.bin differ